I recently figured out how to type unicode in Emacs so I thought it'd be fun to write some functions with unicode names. Nope. It didn't work. I recalled [5.8.0 Note] A Sub Named Sigma but the same magic doesn't work here. Am I doing this wrong or is this a bug in my perl? I tried both 5.8.8 and bleadperl.

use utf8;
use strict;
use warnings;
use Test::More tests => 2;

sub ∃ (&\@) { my $cb = shift @_; $cb->() and return 1 for @_; 0 }
sub ∄ (&\@) { not ∃( @_ ) }

my @numbers = 1 .. 10;
ok( ∃ { /\d/ } @numbers, '∃' );
ok( ∄ { /[[:alpha:]]/ } @numbers, '∄' );

1..2
Illegal declaration of anonymous subroutine at /home/josh/src/any.pl l
+ine 6.
# Looks like your test died before it could output anything.

[download]

⠤⠤ ⠙⠊⠕⠞⠁⠇⠑⠧⠊

In reply to A sub named ∃ by diotalevi

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.